Baseflow and lowflow of catchments covered by various old teak forest areas

Basuki, Tyas Mutiara; Nugrahanto, Esa Bagus; Pramono, Irfan Budi; Wijaya, Wahyu Wisnu

doi:10.15243/jdmlm.2019.062.1609

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…This may be explained by the fact that the decrease in arable land is the strongest. The negative correlations between PLAND a and evapotranspiration (ET) and base flow (BF) imply that conversion of arable land to, e.g., pasture or forest would result in increased ET and BF, due to the higher capability of plant evapotranspiration and slower water transmission, which is in agreement with previous findings that perennial vegetation is more likely to increase ET (Peel et al, 2010;Li et al, 2017), and the decrease in agriculture leads to increased annual base flow (Basuki et al, 2019). Less interception by crops and additional surface runoff resulting from the implementation of tillage practices (e.g., tractor roads) can result in increased surface runoff (SQ).…”

Section: Effects Of Lucc Predictors On Water Quantity and Qualitysupporting

confidence: 88%

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

Lei

Wagner

Fohrer

2022

Hydrol. Earth Syst. Sci.

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Abstract. Understanding the impacts of land use changes (LUCCs) on the dynamics of water quantity and quality is necessary for the identification of mitigation measures favorable for sustainable watershed management. Lowland catchments are characterized by a strong interaction of streamflow and near-surface groundwater that intensifies the risk of nutrient pollution. In this study, we investigated the effects of long-term changes in individual land use classes on the water and nutrient balance in the lowland catchment of the upper Stör in northern Germany. To this end, the hydrological model SWAT (Soil and Water Assessment Tool) and partial least squares regression (PLSR) were used. The SWAT model runs for three different land use maps (1987, 2010, and 2019) were conducted, and the outputs were compared to derive changes in water quantity (i.e., evapotranspiration – ET; surface runoff – SQ; base flow – BF; water yield – WYLD) and quality variables (i.e., sediment yield – SED; load of total phosphorus – TP; load of total nitrogen – TN). These changes were related to land use changes at the subbasin scale using PLSR. The major land use changes that significantly affected water quantity and quality variables were related to a decrease in arable land and a respective increase in pasture and urban land during the period of 1987–2019. Changes in landscape indictors such as area size, shape, dominance, and aggregation of each land use class accounted for as much as 61 %–88 % (75 % on average) of the respective variations in water quantity and quality variables. The aggregation, contiguity degrees, and area extent of arable land were found to be most important for controlling the variations in most water quantity variables. Increases in arable (PLANDa) and urban land percent (PLANDu) led to more TP and TN pollution, sediment export, and surface runoff. The cause–effect results of this study can provide a quantitative basis for targeting the most influential change in landscape composition and configuration to mitigate adverse impacts on water quality in the future.

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Section: Effects Of Lucc Predictors On Water Quantity and Qualitysupporting

confidence: 88%

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

Lei

Wagner

Fohrer

2022

Hydrol. Earth Syst. Sci.

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Effect of rainfall on assessment of hydrologic sustainability in Citanduy sub-watersheds

Pramono¹,

Basuki²,

Auliyani³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Hydrology is one of the criteria for monitoring and evaluation (monev) of watersheds management as stated in the Minister of Forestry Regulation Number P.61/Menhut-II/2014. So far, the use of various hydrological parameters for the monev of watersheds has not been evaluated whether these parameters truly reflect the condition of the watershed. This study aimed (1) to evaluate the effect of rainfall on the hydrological criteria of each sub-watershed, which include: flow regime coefficient, annual flow coefficient, sediment load, and water use index and (2) to evaluate the effect of rainfall on watershed carrying capacity. Regression analysis was used to see the relationship between annual rainfall and hydrological parameters used in watershed sustainability. This analysis was crucial to see the development of forest and land rehabilitation efforts in restoring degraded land. Data collection was carried out from 2008 to 2016 in each of the sub-watersheds of the Citanduy Watershed, namely Cijolang, Cikawung, Cimuntur, Ciseel, and Upper Citanduy. From this research, it is known that flow regime coefficient, annual flow coefficient, sediment load, water use index, and flood frequency are strongly influenced by rainfall so the result in evaluating watershed carrying capacity may vary depending on the rainfall. Besides being influenced by rainfall, flow regime coefficient, annual flow coefficient, and sediment load are also affected by land cover, while the slope affects the sediment load.

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Tropical Forest Landscape Restoration in Indonesia: A Review

Indrajaya¹,

Yuwati²,

Lestari³

et al. 2022

Land

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Indonesia has the second-largest biodiversity of any country in the world. Deforestation and forest degradation have caused a range of environmental issues, including habitat degradation and loss of biodiversity, deterioration of water quality and quantity, air pollution, and increased greenhouse gas emissions that contribute to climate change. Forest restoration at the landscape level has been conducted to balance ecological integrity and human well-being. Forest restoration efforts are also aimed at reducing CO2 emissions and are closely related to Indonesia’s Nationally Determined Contribution (NDC) from the forestry sector. The purpose of this paper is to examine the regulatory, institutional, and policy aspects of forest restoration in Indonesia, as well as the implementation of forest restoration activities in the country. The article was written using a synoptic review approach to Forest Landscape Restoration (FLR)-related articles and national experiences. Failures, success stories, and criteria and indicators for forest restoration success are all discussed. We also discuss the latest silvicultural techniques for the success of the forest restoration program. Restoration governance in Indonesia has focused on the wetland ecosystem such as peatlands and mangroves, but due to the severely degraded condition of many forests, the government has by necessity opted for active restoration involving the planting and establishment of livelihood options. The government has adapted its restoration approach from the early focus on ecological restoration to more forest landscape restoration, which recognizes that involving the local community in restoration activities is critical for the success of forest restoration.

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Baseflow and lowflow of catchments covered by various old teak forest areas

Cited by 3 publications

References 20 publications

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

Effect of rainfall on assessment of hydrologic sustainability in Citanduy sub-watersheds

Tropical Forest Landscape Restoration in Indonesia: A Review

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